4R70W shift kit install - what else should I do while I'm in there? | Ford Explorer Forums - Serious Explorations

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4R70W shift kit install - what else should I do while I'm in there?


Active Member
August 30, 2004
Reaction score
City, State
San Diego, CA
Year, Model & Trim Level
'97 XLT 5.0 AWD
I'm going to replace the pressure regulator valve and the bypass clutch control valve while I have it open. Anything else that should be replaced? I seem to remember a posting a while ago about updating a couple other valves with some updated parts from Ford, but I can't find that thread.



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Let me run through my information... not sure there's a lot else valve body related....get back to ya later in the week


Dang - TCC started giving me problems a couple days ago and just got a CEL on the way to work this morning.

Back to the original question - anything else I should change while I'm in there?


In the tech section, there is a very good article for upgrades written by one of the Ford Engineers. You may what to change the 1/2 & 2/3 accumulator valves.

Thanks, guys! The tccoa site is what I was looking for.

Turns out the CEL is not trans related - I got a P0442 - evap emissions system leak (small). Search turned up a possible resolution - bad purge valve.

Looks like I'll be busy over the New Year's weekend - trans work, lower ball joints, and fix my evap system.

Thanks again.